1.1 本试验方法包括测定表观比重（第 5. 到 9 )和真实比重（截面 10 到 14 )大于25的大块焦炭 毫米[1 在中。]尺寸和计算孔隙度（截面 15 )根据比重数据。 1.2 单位- 以国际单位制或非国际单位制表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 通过本试验方法测定的表观比重和真比重受炭化煤的类型以及炭化的操作和制备条件的影响，即装料堆积密度、加热速率和粉碎水平。反过来，这些特性直接影响使用焦炭的过程中的性能。

1.1 This test method covers the determination of apparent specific gravity (Sections 5 to 9 ) and true specific gravity (Sections 10 to 14 ) of lump coke larger than 25 mm [1 in.] size and calculating porosity (Section 15 ) from the specific gravity data. 1.2 Units— The values stated in either SI units or non-SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Apparent and true specific gravity, as determined by this test method, are influenced by the type of coals carbonized and the operating and preparational conditions of that carbonization, that is, charge bulk density, heating rate, and pulverization level. In turn, these properties directly influence the performance in processes using coke.